and why this hour president obama announces his plan on immigration reform. i'm poppy harlow. roll it. >>> death defying and terrifying. why a tragic accident at the x games is raising eyebrows about the sport of extremes. >>> plus -- >> this 13-hour procedure was performed by a team of 16 plastic orthopedic and microvascular surgeons. >> a war vet becomes the seventh person in the country to have his arms replaced. >>> and hillary clinton's exit interview. this hour, cnn sits down with america's top diplomat and her final days as secretary of state. >>> hi, everyone. a dramatic report out of miami is focusing new attention on baseball. and that sport's ongoing battle against performance enhancing drugs. this in the news again. the miami new times newspaper has published the names of big league players allegedly connected to, of all things, an anti-aging clinic located in south florida. the paper says this follows their three-month investigation. one of the big names, folks, a-rod, alex rodriguez. just to be clear here, a-rod has in the past admitted to doping, but has denied